Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
Yes but when I flashed the card often, this was 3 something years ago, afterwards I didn't flash anymore and just used the card in my PC for a looong time. So it couldn't have been a a flash gone wrong. What is possible (??) that the frequent flashing somehow wore the eeprom down, but this is only speculation. I have no idea whether something like this is even possible.
That being said, card works wonderfully (again), no issues from what I see.
flexy123
Member
Last Activity: 05-25-2020, 02:05 AM
Joined: 12-07-2012
Location: Alicante
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
I watched this previously but could not really confirm that the card getting warmer improved things. I actually hoped this would happen since this would have explained things. But it took 10-15 boots to "catch", no matter what. It was, according to all logic, very dead.
But when I put it into the oven, and then the caps popped off and I replaced them, it wouldn't initialize at all anymore. That is, until I reflashed it....Last edited by flexy123; 10-03-2018, 01:34 AM.Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
I flashed the card *excessively* since I once was big into bios modding. And with excessively I mean, possibly 100+ times. It is possible that the frequent flashes were not good either. I am sure there are limits in how often you can flash an eeprom?!...Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
Yeah I have no idea. The strange behaviour of the card, that when it run then it run flawlessly, and in general, makes me believe that it was nothing related which could've been fixed with "reflow". I have a feeling I could have "fixed" it before I did anything with the oven or the heatgun.
There is *one* difference tho, that the card doesn't run at 16X PCIE3.0 speed anymore but at 8xPCIE 3.0, but this is a non-issue since this bandwidth is never used anyway with only one...Last edited by flexy123; 10-03-2018, 01:24 AM.Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
I AM ABSOLUTELY...MIND.BLOWN:
I had my GTX970 now several times in the oven, at various temps. One time, all the caps popped off. (Yes, I am an idiot, but well....)
So I spent considerable time desoldering caps from another GPU I had and re soldered them to the GTX970. ("Pain in the ass" would be the understatement of the century)
Following that, I treated my GPU several times with the heat gun, at various temps, using the thermocouple and then without. Then...Last edited by flexy123; 09-29-2018, 04:37 AM.Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
Thanks for your reply!
Yes, the GPU is so old that to be honest right now I am not bothering, if I do another attempt then only *at least* with a thermocouple so I can have an halfway idea about the temperatures. At this point, while it is quite annoying since it now takes me sometimes 5mins until I can use my PC in the morning (after 10-12 restarts), I am still baffled THAT it works without a hitch once it does get detected. Even under full load.
You are correct, I could save myself...Last edited by flexy123; 08-23-2018, 05:15 PM.Leave a comment:
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Re: Heat gun for GPU reflow
Cool, yes seems more practical since you need to hold the other type.Leave a comment:
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Re: Heat gun for GPU reflow
Would you recommend the TM-902C type-K or one of these laser handheld thermometers? Looking around on the usual cheap places, both are equally cheap to have. (about $10 or so).Leave a comment:
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Re: Heat gun for GPU reflow
No one is denying that heat gun reflows or "baking" in the oven will very likely give you worse results than a real, professional reflow/reball. That is, IF these DIY methods even work. (TBH, it sorta angers me when I see comments on Youtube videos by pros dissing these methods, because we know that these methods are only last resort, and we also know there is considerable risk. We don't need that being told my the "pros". Problem: Not everyone has reflow equipment, and for some things like old GPUs, it's often more a curiosity thing...Last edited by flexy123; 08-05-2018, 07:57 PM.Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
I just did an attempt at a "ghetto reflow" using a heat gun (350 C), but same behaviour.
(But I was very paranoid with the heat gun to not destroy the card, so it's possible I didn't heat the GPU long enough. I waited until I saw the flux/paste I had there started to smoke and saw it bubbling, holding the gun about 7-8" from the GPU for maybe a minute. Since the gun is 350 C at that setting (low), I was afraid to go closer. Anyway, I can't help but think this is not BGA related....Last edited by flexy123; 08-05-2018, 01:40 AM.Leave a comment:
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Re: EVGA Titan X Maxwell suspected bad caps
Stupid question: Card is out of warranty, like my ol' EVGA GTX 970 SC ACX2.0, I assume?
Bad caps are of course possible, but from my experience, problems with GPUs, especially when they artifact are more often with weak soldering spots on the BGA, means it would require a reball/reflow.
There are, in theory, ways to semi "reflow" a GPU with a heat-gun or even reflowing in an oven. I am looking into this myself, I just want to read up more on "reflowing" with a heat gun..which is a little risky...Leave a comment:
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Re: Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
A Thermaltake Toughpower 750W (?) or 800W, old, but good.
The same PSU I already replaced a bad cap years (!) ago upon advice from this forum. Bad cap on the 3VSB rail, some guy here had the same problem with the same PSU and cap. But this time I am relatively certain the PSU is not the problem.Last edited by flexy123; 08-04-2018, 01:54 AM.Leave a comment:
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Help me troubleshoot defective GPU (not always detected w/ VGA LED on)
I am trying to make this short. My aim is to determine whether the defect could be weak soldering spots on my GPU (GTX 970), or defective components on the GPU. (Caps, chips etc.)
I already did lots of troubleshooting and can relatively certainly exclude PSU, board, so the problem is is with the GPU. This is a ca. 3+ years old EVGA GTX 970.
Since two weeks or so, the GPU is often not seen already in the BIOS. The board shows the red VGA light, indicating a problem with the GPU. (Internal GPU no problem). The board doesn't boot and is "freezing" VERY early during...Last edited by flexy123; 08-03-2018, 09:33 PM. -
Need help with connecting a LCD panel (4 connectors on the side)
I have two old monitors, an old Benq X2200W (panel broke), and an old Samsung 226BW. (Yes, the caps on the Samsung have already been replaced). These have standard 22" TFT LCD panels.
Today I swapped the panel of the 226BW and put it in the BenQ and connected to the PCB...and the monitor works flawlessly. So this is not a request for help but a question out of curiosity
On the side of the panels are 4 connectors (images attached, not mine, but they show the connectors). With the Samsung, I actually marked the order of the connectors it was something like Blue,...Last edited by flexy123; 08-30-2017, 09:07 PM. -
Re: Samsung LN52A530P1FXZA Tab bonding repair
Can someone please explain/define what "tab bond failure" actually means.
Does it mean that the ribbons/tapes that are connected to the panel is (for whatever reason) came lose and don't stick anymore...eg. not making contact?
How is the contact made anyway? Glue? Solder?
I am asking because I see people doing the fix by applying physical pressure with pads...but if we know how the contact is made in the first place, and why it came lose, maybe it can be re-attached and permanently fixed...Leave a comment:
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2008 52" Samsung 4 Series - Tab Bond Failure?
I already replaced the T-CON (the previous I had resulted in no image AT ALL), but now I am getting this:
The TCON Led is blinking once a second. I can see garbled service menu, OSD etc. There is a very small area where there is a picture.
My question: How can I make sure/trouble-shoot it's a TAB bond problem? -
Re: How to run the self test on a plasma display control board / logic board
Hello, THIS one is related.
Some Samsungs, as far as I know, require that you connect pin PS_ON to GND on the power connector which goes from the SMPS to the main board. (To force the PS on). (Correct me if I am wrong).
I did the self-test of my Samsung logic board as you described, but did not jumper the PS. I disconnected the LVDS, jumpered 3+4 on the logic board, turned the TV on but I got the same garbled screen as with unjumpered logic board.
Since I got a picture,...Last edited by flexy123; 06-20-2016, 07:32 PM.Leave a comment:
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Re: Samsung PS-42Q97HD Logic Board not giving VS_ON
wow, excellent, I had an inkling it's something like that, explains why the Logic failed shortly after I repaired the SMPS. Will contact you.Leave a comment:
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Re: Samsung PS50A2476, No Picture
When I check those training manuals, and from my rather limited knowledge, it always points to Logic Board Failure.
This right image looks VERY CLOSE to what I see.
I also did the Logic Board test and could not get any proper image, the training manual for the 2009 PDPs (earlier I cannot find) says if the Logic Board cannot display its internal test patterns it's the logic board.
Now I am trying to get the very exact, identical Rev somewhere from ChinaLeave a comment:
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Re: Samsung PS50A2476, No Picture
(domain expired so the pic was not showing, bummer. Should show now)Leave a comment:
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